I've tried to get this right and can't. I need to add a calculator to a page that allows a user to put in height and width measurements, check a radio button or two, and then generate a final cost. We price our signs by calculating the area of the sign and multiplying that times 11. If the sign is double sided we take that answer and multiply it times 1.7. The radio buttons also play a part in deciding the price. I have "Web Pages: an all in one desk reference" that i bought yesterday. It has a large section and javascript, but it's not very user friendly. Now, to make a long story longer, can I do this with javascript or is there another method i should research?